Those two sections prohibit sending weaponry to countries described in section 40(d): “The prohibitions contained in this section apply with respect to a country if the Secretary of State determines that the government of that country has repeatedly provided support for acts of international terrorism,” Congress stated in the Arms Control Export Act.

“For purposes of this subsection, such acts shall include all activities that the Secretary determines willfully aid or abet the international proliferation of nuclear explosive devices to individuals or groups or willfully aid or abet an individual or groups in acquiring unsafeguarded special nuclear material,” the law continues.

The law allows the president to waive those prohibitions if he “determines that the transaction is essential to the national security interests of the United States.”